Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
thanh tang » thanh thang, thanh trang, thanh tung
doi chieu » doc hieu, doi chi, ho chieu
cong tac » cong ty
tang ap » tang van, tang tai, tang dan
ap dung » xay dung, van dung
ban cau » bang cau, ban can, van cau

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu sang - thanh tang ap dung ((huong dan) or (cong tac)) ban cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sang - thanh tang ap dung ((huong dan) OR (cong tac)) ban cau.
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - thanh tang ap dung ((huong dan) or (cong tac)) ban cau*.